"Last Scan" Info Disappears

On the main Prevx splash screen I loose the "Last Scan" information after about 24 hours. After 24 hours the information is completely missing - that is, it is blank. Right after I do a scan though, the "last scan" info will update for about 24 hours and then the info disappears. Thus has continued to happen even after three of four software updates. What can I do?